My annoyance of the day in Ruby: inconsistent usage of the inequality operator
in the standard library.

The generic inequality operator in Ruby throws an exception when objects of
differing types are compared. This, in my opinion, is a good thing. I don't
want to accidentally attempt to compare an integer and a class, for instance.

1<Class# ArgumentError: comparison of Fixnum with Class failed

This makes sense!

Today, I discovered that the inequality operators are overridden for classes
and modules to allow for checking inheritance: